69711945 has 16 divisors (see below), whose sum is σ = 112624512. Its totient is φ = 36817920.

The previous prime is 69711923. The next prime is 69711947. The reversal of 69711945 is 54911796.

It is not a de Polignac number, because 69711945 - 2¹⁷ = 69580873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 69711897 and 69711906.

It is not an unprimeable number, because it can be changed into a prime (69711947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21016 + ... + 24105.

It is an arithmetic number, because the mean of its divisors is an integer number (7039032).

Almost surely, 2^69711945 is an apocalyptic number.

It is an amenable number.

69711945 is a deficient number, since it is larger than the sum of its proper divisors (42912567).

69711945 is a wasteful number, since it uses less digits than its factorization.

69711945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45232.

The product of its digits is 68040, while the sum is 42.

The square root of 69711945 is about 8349.3679401497. The cubic root of 69711945 is about 411.5624399895.

The spelling of 69711945 in words is "sixty-nine million, seven hundred eleven thousand, nine hundred forty-five".